Phosphorus and NMR
نویسندگان
چکیده
منابع مشابه
Phosphorus NMR of plasmid DNA.
Due to the key position of phosphorus-containing compounds in biology, favour able NMR properties of 3 I P nucleus and its 100 % natural abundance, 3 1 P NMR has become a valuable biochemical method. It gives, for example, information about DNA conformation since 3 I P NMR chemical shift is sensitive to the phosphodiester linkage geometry (Gorenstein 1984). 3 1 P NMR reflects base sequence — d...
متن کاملPhosphorus NMR analysis of phospholipids in detergents.
Various detergents can be used to dissolve phospholipids, resulting in very narrow 31PNMR resonances. The resonances are well resolved, allowing identification and quantitative analysis of phospholipids in a mixture. The chemical shift depends strongly on pH, reflecting changes in the state of ionization of the phospholipid headgroup moieties. Samples of phospholipids dissolved in aqueous deter...
متن کاملIsN NMR Spectroscopy of Phosphorus-Nitrogen Compounds
A systematic study of sensitil'ilY enhancement in ' ~N NMR spectra of phosphorus-nilrogf'o compounds by 3IP.I5N polariSlllion tfllrtsff'r \'l as .,..rformed !ISing Iris-(dimethylamioo)phosphine ( I) as a model compound. The application of sen!ral mul1ipulse lechoiques (refocussed and oon-rdocussed INEPT. DEPT) lind dccoupling sclw>mes shows lh:tl muimum enhaocement \'I'as reached \'lith fhe non...
متن کاملSlow-Motional NMR Line Shapes for Very Anisotropic Rotational Diffusion. Phosphorus-31 NMR of Phospholipids
The model of Mason, Polnaszek, and Freed for ESR-slow-tumbling spectra is extended to the case of NMR line shapes for arbitrary tilt of the internal axis of relatively rapid rotation with respect to the principal axes of the chemical shielding tensor for a decoupled I = 1 / 2 nucleus. The theory is applied to an analysis of 31P NMR spectra from partially hydrated dipalmitoylphosphatidylcholine ...
متن کاملReinvestigation by phosphorus NMR of lipid distribution in bicelles.
Mixtures of dimyristoyl-phosphatidylcholine (DMPC) and dihexanoyl-phosphatidylcholine (DHPC) in water form disks also called bicelles and different bilayer organizations when the mol ratio of the two lipids and the temperature are varied. The spontaneous alignment in a magnetic field of these bilayers above the transition temperature T(m) of DMPC is an attractive property that was successfully ...
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ژورنال
عنوان ژورنال: Nature
سال: 1968
ISSN: 0028-0836,1476-4687
DOI: 10.1038/2191087a0